Thermal measuring and testing – Temperature measurement – By a vibratory effect
Reexamination Certificate
2006-03-07
2006-03-07
Verbitsky, Gail (Department: 2859)
Thermal measuring and testing
Temperature measurement
By a vibratory effect
C374S136000, C374S162000, C385S012000, C356S044000, C356S365000, C356S477000, C250S256000, C250S227180, C702S006000
Reexamination Certificate
active
07008103
ABSTRACT:
A method and apparatus for sensing temperature using optical fiber is provided. In one embodiment, a method for sensing temperature using optical fiber includes launching a polarized optical signal having sufficient intensity to produce Brillouin scattering of the signal into a polarization maintaining optical fiber, receiving a first signal reflected from the launched signal, receiving a second signal reflected from the launched signal; and resolving a metric indicative of temperature from the first and second received signals. The method is particularly useful for sensing temperature in hazardous locations such as down hole gas and oil field applications or other applications where minimization of strain effects to signal transmission is desired.
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Pruchnic Jr. Stanley J.
Verbitsky Gail
Weatherford / Lamb, Inc.
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